Extra Golden Keys and BA Rank Glitch

My gf and I play on the same system with split screen. After putting in the latest Golden Key codes for both of us we logged in and she had nearly double the keys she had from before (25) and her Badass rank had jumped enough to give her 69 tokens. Nothing happened with my char other than getting the couple of Golden Keys from the input codes.

Anyone else heard of something like this? I haven't been able to find anything. Thanks!